2010 Volume 83 Issue 1 Pages 13-20
Surfactant molecules can form self-assembled structures in aqueous solution and give various functions to the solution. Recently, it was found that wormlike micelle which is a kind of molecular assembly of surfactant can be formed with several mixed surfactant systems. In this review, we described the formations of wormlike micelles with mixtures of cationic and nonionic surfactants, and with sucrose fatty acid systems. The formations of a temperature-insensitive wormlike micellar solution were also mentioned. Recently, liquid crystal based gel-emulsion which has highly viscous continuous phase has been reported. We described O/I1 gel-emulsion formed by a polyglyceryl fatty acid ester and O/H1 gel-emulsion formed by a poly(oxyethylene)alkyl ether. We also mentioned the transparent gel-emulsion by adding glycerol to O/H1 gel-emulsion.